[Course-discovery]: Django 4.2 Upgrade

[UsamaSadiq]

Description

Under the effort of Django 4.2 Upgrade, complete all of the following steps to complete the upgrade.

• Update tox & Github action workflow using modernisers to add support for Django 4.2
• Remove any versions of Django earlier than 4.2 from tox.ini, and GitHub Actions workflows.
• Remove any versions of Python earlier than 3.8 from tox.ini, and GitHub Actions workflows.
• Override the pinned Django<3.2 constraint in the common_constraints to Django<4.0 to override the global Django constraint.
• Add a local constraint of Django<5.0 and run make upgrade to update all dependencies for Django 4.2.
• Run and verify all tests are passing in the CI for both Django 4.2.
• Run available code-mods to fix the failing tests.
• Update the repo support field in the IDA Upgrade Sheet.

[gsueros]

Hi @irtazaakram , I was currently working on this issue, but sorry I didn't assign it to me and just created a pull request here openedx/course-discovery#4088.

[UsamaSadiq]

Hi @gsueros I've updated the issue description according to our internal discussion. We are no longer planning to provide backward compatibility with Django 3.2 so you can follow the instructions and remove the Django 3.2 related envs as well.

[gsueros]

PR in progress for Django 4.2 upgrade openedx/course-discovery#4088